database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-01-06 05:22:24 +03:00
Code Activity

Fix for bug#49570: Assertion failed: !(order->used & map)

Browse Source 
on re-execution of prepared statement

Problem: some (see eq_ref_table()) ORDER BY/GROUP BY optimization
is called before each PS execution. However, we don't properly 
initialize its stucture every time before the call.

Fix: properly initialize the sturture used.



mysql-test/r/ps.result:
  Fix for bug#49570: Assertion failed: !(order->used & map) 
  on re-execution of prepared statement
    - test result.
mysql-test/t/ps.test:
  Fix for bug#49570: Assertion failed: !(order->used & map) 
  on re-execution of prepared statement
    - test case.
sql/sql_select.cc:
  Fix for bug#49570: Assertion failed: !(order->used & map) 
  on re-execution of prepared statement
    - set order->used to 0 before each eq_ref_table() call,
  as the function relies on that.
This commit is contained in:
Ramil Kalimullin
2009-12-22 10:39:29 +04:00
parent 007d77afb9
commit 7344b58c32
3 changed files with 39 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
sql/sql_select.cc
View File

@@ -6777,6 +6777,7 @@ static void update_depend_map(JOIN *join, ORDER *order)
table_map depend_map;
order->item[0]->update_used_tables();
order->depend_map=depend_map=order->item[0]->used_tables();
order->used= 0;
// Not item_sum(), RAND() and no reference to table outside of sub select
if (!(order->depend_map & (OUTER_REF_TABLE_BIT | RAND_TABLE_BIT))
&& !order->item[0]->with_sum_func)